Re: [PATCH v1] Revert "mmc: sdhci-tegra: drop ->get_ro() implementation"

[Thierry Reding]

On Fri, Aug 09, 2019 at 01:24:30AM +0300, Dmitry Osipenko wrote:
> The WRITE_PROTECT bit is always in a "protected mode" on Tegra and
> WP-GPIO state need to be used instead. In a case of the GPIO absence,
> write-enable should be assumed. External SD is writable once again as
> a result of this patch because the offending commit changed behaviour for
> the case of a missing WP-GPIO to fall back to WRITE_PROTECT bit-checking,
> which is incorrect for Tegra.
> 
> Cc: stable@xxxxxxxxxxxxxxx # v5.1+
> Fixes: e8391453e27f ("mmc: sdhci-tegra: drop ->get_ro() implementation")
> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
> ---
>  drivers/mmc/host/sdhci-tegra.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)

Acked-by: Thierry Reding <treding@xxxxxxxxxx>

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